Client VPN stopped working when I set up site-to-site VPN

Netcruiser · ‎09-05-2019

Hi

I set up site-to-site VPN with one side ASA and other side Meraki MX250.

On the ASA side client VPN used to work before the Site-to-site VPN set up and start working.

I wonder if anyone experience similar problem and has solution or suggestions.

Thanks in advance!

netcruiser

Rob Ingram · ‎09-05-2019

Hi,
Potentially the issue could be related to a NAT or ACL configuration, can you provide the configuration of the ASA? Can you indicate which are the networks/subnets that are not working.

Can you provide the output of "show nat"
Can you run packet-tracer from the CLI and provide the output here

Netcruiser · ‎09-05-2019

Here is the changes added to make site-to-site work on ASA. Client VPN users stopped working on the ASA site after the change:

object network LOCAL
subnet 10.57.0.0 255.255.0.0
object network REMOTE
subnet 172.16.0.0 255.240.0.0

access-list OUTSIDE-IN extended permit esp any any
access-list OUTSIDE-IN extended permit udp any any
access-list 90 extended permit ip 10.57.0.0 255.255.0.0 172.16.0.0 255.240.0.0

nat (inside,outside) source static LOCAL LOCAL destination static REMOTE REMOTE

crypto ipsec ikev1 transform-set Meraki_Transform_Set esp-aes-256 esp-sha-hmac
crypto ipsec security-association pmtu-aging infinite
crypto map ASAtoMX 20 match address 90
crypto map ASAtoMX 20 set peer 70.42.129.65
crypto map ASAtoMX 20 set ikev1 transform-set Meraki_Transform_Set
crypto map ASAtoMX 20 set security-association lifetime kilobytes 2147483640
crypto map ASAtoMX interface outside
crypto ca trustpool policy
crypto ikev1 enable outside
crypto ikev1 policy 1
authentication pre-share
encryption 3des
hash sha
group 2
lifetime 28800

tunnel-group x.x.129.65 type ipsec-l2l
tunnel-group x.x.129.65 ipsec-attributes
ikev1 pre-shared-key *****

thanks again

Netcruiser · ‎09-05-2019

# sh nat
Manual NAT Policies (Section 1)
1 (inside) to (outside) source static LOCAL LOCAL destination static REMOTE REMOTE
translate_hits = 9259, untranslate_hits = 9262

Manual NAT Policies (Section 3)
1 (inside) to (outside) source dynamic any interface
translate_hits = 6538144, untranslate_hits = 219096

Netcruiser · ‎09-05-2019

# packet-tracer input outside icmp 10.57.1.1 50 80 8.8.8.8

Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit Rule
Additional Information:
MAC Access list

Phase: 2
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 0.0.0.0 0.0.0.0 outside

Phase: 3
Type: ACCESS-LIST
Subtype: log
Result: ALLOW
Config:
access-group OUTSIDE-IN in interface outside
access-list OUTSIDE-IN extended permit icmp any any
Additional Information:

Phase: 4
Type: CONN-SETTINGS
Subtype:
Result: ALLOW
Config:
class-map class-default
match any
policy-map global_policy
class class-default
set connection decrement-ttl
service-policy global_policy global
Additional Information:

Phase: 5
Type: NAT
Subtype: per-session
Result: ALLOW
Config:
Additional Information:

Phase: 6
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:

Phase: 7
Type: INSPECT
Subtype: np-inspect
Result: ALLOW
Config:
class-map inspection_default
match default-inspection-traffic
policy-map global_policy
class inspection_default
inspect icmp
service-policy global_policy global
Additional Information:

Phase: 8
Type: INSPECT
Subtype: np-inspect
Result: ALLOW
Config:
Additional Information:

Phase: 9
Type: VPN
Subtype: ipsec-tunnel-flow
Result: ALLOW
Config:
Additional Information:

Phase: 10
Type: FLOW-CREATION
Subtype:
Result: ALLOW
Config:
Additional Information:
New flow created with id 8646304, packet dispatched to next module

Result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: outside
output-status: up
output-line-status: up
Action: allow

Rob Ingram · ‎09-05-2019

but what about the configuration of the Remote Access VPN? what IP address is the user assigned? Is it within the network 10.57.0.0?

The packet-tracer is incorrect, re-run - "packet-tracer input outside icmp 10.57.1.1 8 0 8.8.8.8"

Netcruiser · ‎09-05-2019

# packet-tracer input outside icmp 10.57.1.1 8 0 8.8.8.8

Phase: 1
Type: ACCESS-LIST
Subtype:
Result: ALLOW
Config:
Implicit Rule
Additional Information:
MAC Access list

Phase: 2
Type: ROUTE-LOOKUP
Subtype: input
Result: ALLOW
Config:
Additional Information:
in 0.0.0.0 0.0.0.0 outside

Phase: 3
Type: ACCESS-LIST
Subtype: log
Result: ALLOW
Config:
access-group OUTSIDE-IN in interface outside
access-list OUTSIDE-IN extended permit icmp any any
Additional Information:

Phase: 4
Type: NAT
Subtype: per-session
Result: ALLOW
Config:
Additional Information:

Phase: 5
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:

Phase: 6
Type: INSPECT
Subtype: np-inspect
Result: ALLOW
Config:
class-map inspection_default
match default-inspection-traffic
policy-map global_policy
class inspection_default
inspect icmp
service-policy global_policy global
Additional Information:

Phase: 7
Type: INSPECT
Subtype: np-inspect
Result: ALLOW
Config:
Additional Information:

Phase: 8
Type: VPN
Subtype: ipsec-tunnel-flow
Result: ALLOW
Config:
Additional Information:

Phase: 9
Type: NAT
Subtype: per-session
Result: ALLOW
Config:
Additional Information:

Phase: 10
Type: IP-OPTIONS
Subtype:
Result: ALLOW
Config:
Additional Information:

Phase: 11
Type: FLOW-CREATION
Subtype:
Result: ALLOW
Config:
Additional Information:
New flow created with id 8712237, packet dispatched to next module

Result:
input-interface: outside
input-status: up
input-line-status: up
output-interface: outside
output-status: up
output-line-status: up
Action: allow

Netcruiser · ‎09-05-2019

but what about the configuration of the Remote Access VPN? what IP address is the user assigned? Is it within the network 10.57.0.0?

they are in 10.1.0.0/24 range

Thank you

Netcruiser · ‎09-06-2019

The strange thing is, after I removed all site-to-site config, and reload the ASA the client VPN from inside still not working with error:

Can't connect to My VPN

The L2TP connection attempt failed because the security layer encountered a processing error during initial negotiations with the remote computer.

asa# sh run
: Saved
:
ASA Version 9.1(1)
!
hostname asa
enable password MumM3b.5z/4iYZJp encrypted
xlate per-session deny tcp any4 any4
xlate per-session deny tcp any4 any6
xlate per-session deny tcp any6 any4
xlate per-session deny tcp any6 any6
xlate per-session deny udp any4 any4 eq domain
xlate per-session deny udp any4 any6 eq domain
xlate per-session deny udp any6 any4 eq domain
xlate per-session deny udp any6 any6 eq domain
passwd 2KFQnbNIdI.2KYOU encrypted
names
!
interface GigabitEthernet0/0
nameif outside
security-level 0
ip address x.x.74.34 255.255.255.248
!
interface GigabitEthernet0/1
nameif inside
security-level 100
ip address 10.1.1.1 255.255.255.248
!
interface GigabitEthernet0/2
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/3
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/4
shutdown
no nameif
no security-level
no ip address
!
interface GigabitEthernet0/5
shutdown
no nameif
no security-level
no ip address
!
interface Management0/0
management-only
nameif management
security-level 0
ip address 192.168.1.1 255.255.255.0
!
ftp mode passive
dns server-group DefaultDNS
domain-name netskope.com
same-security-traffic permit intra-interface
object network obj_10.1.1.0_outside
subnet 10.1.1.0 255.255.255.248
object network inside-network
subnet 10.1.1.0 255.255.255.248
object network obj-8.8.8.8
host 8.8.8.8
object network LOCAL
subnet 10.57.0.0 255.255.0.0
object network REMOTE
subnet 172.16.0.0 255.240.0.0
access-list INSIDE_IN extended permit ip any any
access-list INSIDE_IN extended permit icmp any any
access-list OUTSIDE-IN extended permit icmp any any
access-list OUTSIDE-IN extended permit ip any any
access-list OUTSIDE-IN extended permit tcp any any
pager lines 24
mtu outside 1500
mtu inside 1500
mtu management 1500
no failover
icmp unreachable rate-limit 1 burst-size 1
icmp permit any outside
icmp permit any unreachable outside
icmp permit any echo outside
icmp permit any echo-reply outside
icmp permit any time-exceeded outside
icmp permit any inside
no asdm history enable
arp timeout 14400
no arp permit-nonconnected
!
nat (inside,outside) after-auto source dynamic any interface
access-group OUTSIDE-IN in interface outside
access-group INSIDE_IN in interface inside
route outside 0.0.0.0 0.0.0.0 38.142.74.33 1
route inside 10.57.1.0 255.255.255.0 10.1.1.4 1
route inside 10.57.40.0 255.255.255.0 10.1.1.4 1
route inside 10.57.50.0 255.255.255.0 10.1.1.4 1
route inside 10.57.60.0 255.255.255.0 10.1.1.4 1
route inside 10.57.66.0 255.255.255.0 10.1.1.4 1
timeout xlate 3:00:00
timeout pat-xlate 0:00:30
timeout conn 1:00:00 half-closed 0:10:00 udp 0:02:00 icmp 0:00:02
timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
timeout sip-provisional-media 0:02:00 uauth 0:05:00 absolute
timeout tcp-proxy-reassembly 0:01:00
timeout floating-conn 0:00:00
dynamic-access-policy-record DfltAccessPolicy
user-identity default-domain LOCAL
aaa authentication ssh console LOCAL
http server enable
http 0.0.0.0 0.0.0.0 outside
no snmp-server location
no snmp-server contact
snmp-server enable traps snmp authentication linkup linkdown coldstart warmstart
no service password-recovery
crypto ipsec security-association pmtu-aging infinite
crypto ca trustpool policy
telnet timeout 5
ssh 0.0.0.0 0.0.0.0 outside
ssh timeout 5
console timeout 0
threat-detection basic-threat
threat-detection statistics access-list
no threat-detection statistics tcp-intercept
webvpn
anyconnect-essentials
username nsadmin password ylquIhYGIShcsAFT encrypted
!
class-map inspection_default
match default-inspection-traffic
!
!
policy-map type inspect dns preset_dns_map
parameters
message-length maximum client auto
message-length maximum 512
policy-map global_policy
class inspection_default
inspect dns preset_dns_map
inspect ftp
inspect h323 h225
inspect h323 ras
inspect ip-options
inspect netbios
inspect rsh
inspect rtsp
inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
inspect icmp
!
service-policy global_policy global
prompt hostname context
no call-home reporting anonymous
call-home
profile CiscoTAC-1
no active
destination address http https://tools.cisco.com/its/service/oddce/services/DDCEService
destination address email callhome@cisco.com
destination transport-method http
subscribe-to-alert-group diagnostic
subscribe-to-alert-group environment
subscribe-to-alert-group inventory periodic monthly 12
subscribe-to-alert-group configuration periodic monthly 12
subscribe-to-alert-group telemetry periodic daily
Cryptochecksum:22df3522c377e58117de5214c362d494
: end

Thanks a lot,

Netcruiser